Analysis

  • max time kernel
    163s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:13

General

  • Target

    15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe

  • Size

    89KB

  • MD5

    c4fff953e8bac82ec7abb433c5f377ec

  • SHA1

    598d9cb35e7d90f8895077c0797606f21fd36caf

  • SHA256

    15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6

  • SHA512

    f05b7afe3d258cc73a9576dd418b1aba08905ced36a640d071d3c978e54bbce236f493db8083ed5e47b42d6f6cf90368816b5624d8d6a330f242eb0b95e28a16

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 54 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe
    "C:\Users\Admin\AppData\Local\Temp\15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1232
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3680
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:224
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:324
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:208
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:3792
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:2328

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

    MD5

    df353b67a8e5a9311f3e0aa123c86c79

    SHA1

    46f431a75bac39283ff7902022674756257cd92a

    SHA256

    b4a684840a48ceee7c0883daf7e539dc62f42a8ecf727dd48d19d47f8f6605e6

    SHA512

    0330c24f82882e4900bde8372b85ad7776a2a6f5d9f245ee6b210305c80b0287db0db760401f4fb18252332b747fd8e34865a655c358fe1c2e9304f61f76b42b

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

    MD5

    df353b67a8e5a9311f3e0aa123c86c79

    SHA1

    46f431a75bac39283ff7902022674756257cd92a

    SHA256

    b4a684840a48ceee7c0883daf7e539dc62f42a8ecf727dd48d19d47f8f6605e6

    SHA512

    0330c24f82882e4900bde8372b85ad7776a2a6f5d9f245ee6b210305c80b0287db0db760401f4fb18252332b747fd8e34865a655c358fe1c2e9304f61f76b42b

  • memory/1232-135-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3680-136-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB